Wastewater Grade 1 AZ Latest Update 2025-2026 65 Questions and 100% Verified Correct Answers Guaranteed A+
1 foot of water is equal to how much PSI? - CORRECT ANSWER: 0.43 PSI
- Tanks at the same height but different volume have how much PSI compared? -
CORRECT ANSWER: Same height equals same PSI--- no matter how wide the tanks
are.
A CHECK VALVE is used for what? - CORRECT ANSWER: Prevent backward flow.
A continuous running pump should be check for leaks how often? - CORRECT
ANSWER: Every 24 hours
A DRY WELL possesses a risk when entering because of what? - CORRECT ANSWER:
Usually deep, Hold pumps and other equipment.
A fire hydrant should be opened how much? - CORRECT ANSWER: All the way (100%)
A fire hydrant should be turned off slowly to prevent what? - CORRECT ANSWER:
Water Hammers
A mechanical seal should drip at how many drips per minute? - CORRECT ANSWER:
ZERO- a mechanical seal should never drip?
A meter that takes a small amount of water and gauges its pressure is called a what? -
CORRECT ANSWER: ROTOMETER
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A multimeter measures what? - CORRECT ANSWER: Voltage, current, and resistance
A sewer tap refers to what? - CORRECT ANSWER: The connection point between a
homes main sewer line and a municipal water system.
Air from ventilation is measured in? - CORRECT ANSWER: CFM- cubic feet per minute
Air monitors continuously sample the atmosphere for what levels? - CORRECT
ANSWER: Toxicity, Oxygen, and Flammability
An OPEN, CLOSED,SEMI-CLOSED classification are for making a selection of what? -
CORRECT ANSWER: Impeller (in a pump)- determines the size of solids allowed to
pass through.
CROSS CONTAMINATION refers to what? - CORRECT ANSWER: Process by which
Bacteria and other microorganisms are unintentionally transferred from on substance to another.
Do you add 'acid to water' or 'water to acid'? - CORRECT ANSWER: Acid to water!--- Adding water to acid causes it to boil and splatter
How do you reverse the flow of a pump? - CORRECT ANSWER: Reverse any 2 wires in
the supply
How many feet of water is equal to 1 PSI? - CORRECT ANSWER: 2.31 FT of water = 1 PSI
Hydrogen Sulfide (H2S) in collection systems can cause what kind of problems? -
CORRECT ANSWER: Corrosion, Hazardous atmosphere and Foul odors.
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